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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import React from 'react';
import clsx from 'clsx';
import {MDXProvider} from '@mdx-js/react';
import Head from '@docusaurus/Head';
import Link from '@docusaurus/Link';
import MDXComponents from '@theme/MDXComponents';
import useBaseUrl from '@docusaurus/useBaseUrl';
import styles from './styles.module.css';
const MONTHS = [
'1月',
'2月',
'3月',
'4月',
'5月',
'6月',
'7月',
'8月',
'9月',
'10月',
'11月',
'12月',
];
function BlogPostItem(props) {
const {
children,
frontMatter,
metadata,
truncated,
isBlogPostPage = false,
} = props;
const {date, permalink, tags, readingTime} = metadata;
const {author, title, image} = frontMatter;
const authorURL = frontMatter.author_url || frontMatter.authorURL;
const authorTitle = frontMatter.author_title || frontMatter.authorTitle;
const authorImageURL =
frontMatter.author_image_url || frontMatter.authorImageURL;
const imageUrl = useBaseUrl(image, {absolute: true});
const renderPostHeader = () => {
const TitleHeading = isBlogPostPage ? 'h1' : 'h2';
const match = date.substring(0, 10).split('-');
const year = match[0];
const month = MONTHS[parseInt(match[1], 10) - 1];
const day = parseInt(match[2], 10);
return (
<header>
<TitleHeading
className={clsx('margin-bottom--sm', styles.blogPostTitle)}>
{isBlogPostPage ? title : <Link to={permalink}>{title}</Link>}
</TitleHeading>
<div className="margin-vert--md">
<time dateTime={date} className={styles.blogPostDate}>
{year}年{month}{day}日 {' '}
{readingTime && <> · {Math.ceil(readingTime)} min 阅读时长</>}
</time>
</div>
<div className="avatar margin-vert--md">
{authorImageURL && (
<a
className="avatar__photo-link avatar__photo"
href={authorURL}
target="_blank"
rel="noreferrer noopener">
<img src={authorImageURL} alt={author} />
</a>
)}
<div className="avatar__intro">
{author && (
<>
<h4 className="avatar__name">
<a href={authorURL} target="_blank" rel="noreferrer noopener">
{author}
</a>
</h4>
<small className="avatar__subtitle">{authorTitle}</small>
</>
)}
</div>
</div>
</header>
);
};
return (
<>
<Head>
{image && <meta property="og:image" content={imageUrl} />}
{image && <meta property="twitter:image" content={imageUrl} />}
{image && (
<meta name="twitter:image:alt" content={`Image for ${title}`} />
)}
</Head>
<article className={!isBlogPostPage ? 'margin-bottom--xl' : undefined}>
{renderPostHeader()}
<section className="markdown">
<MDXProvider components={MDXComponents}>{children}</MDXProvider>
</section>
{(tags.length > 0 || truncated) && (
<footer className="row margin-vert--lg">
{tags.length > 0 && (
<div className="col">
<strong>标签：</strong>
{tags.map(({label, permalink: tagPermalink}) => (
<Link
key={tagPermalink}
className="margin-horiz--sm"
to={tagPermalink}>
{label}
</Link>
))}
</div>
)}
{truncated && (
<div className="col text--right">
<Link
to={metadata.permalink}
aria-label={`Read more about ${title}`}>
<strong>阅读更多</strong>
</Link>
</div>
)}
</footer>
)}
</article>
</>
);
}
export default BlogPostItem;